Keep the rear brakes clamping smoothly with the Carlson Disc Brake Caliper Piston 7935, a direct-fit rear caliper piston for a wide range of GM and Dodge cars. It drops into the rear caliper on many vehicles, among them the 2004-2012 Chevrolet Malibu and 2005-2009 Buick LaCrosse — see the "Vehicles it fits" section for the full list.
Inside the rear brake caliper, this piston transfers hydraulic pressure from the brake fluid to press the brake pad against the rotor when you apply the brakes. A piston that is scored, pitted, corroded or seized can cause dragging brakes, uneven pad wear, a soft pedal or fluid leakage at the caliper.
- Rear application: cataloged for the rear caliper position on the listed vehicles.
- Hydraulic actuation: converts brake-fluid pressure into clamping force on the pad.
- Direct-fit replacement: installs as a direct-fit piston for the listed applications.
If a failed or corroded original piston is the cause of your rear braking issue, this replaces it. Sold individually; the listed applications use two per vehicle, so order the quantity your job requires and inspect both rear calipers. Diagnose the underlying cause before servicing; replacing both sides together as a matched pair is recommended.
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Frequently Asked Questions
What does this brake caliper piston do?
It sits in the rear brake caliper and transfers hydraulic pressure from the brake fluid to push the brake pad against the rotor when you press the pedal.
Is this a front or rear piston?
It is cataloged for the rear caliper position on the listed applications.
How many do I need?
It is sold individually. The listed applications use two per vehicle, so order the quantity your repair requires and inspect both rear calipers.
What are signs my caliper piston needs replacing?
Scoring, pitting, corrosion or a seized piston can cause dragging brakes, uneven pad wear, a soft pedal or fluid leaking at the caliper.
Will this fit my vehicle?
It is a direct-fit replacement for many vehicles, including the 2004-2012 Chevrolet Malibu and 2005-2009 Buick LaCrosse. Check the "Vehicles it fits" section to confirm your vehicle.
